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Chalk...

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by

Jonathan Beghtel

on 13 May 2014

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Transcript of Chalk...

What is it exactly?
Why should thoust care?
Without Chalk, AKA Coccoliths, Our society would have been left without one of the most influential tools of knowledge and development we've ever been gifted.
Ye Prevalence in Society
Etymology
Old English
cealc

"chalk, lime, plaster or pebble".
West Germanic borrowing from Latin, making –
calx
.
Greek
khalix
; for "split, break up".
The Latin word for "chalk" was
creta
, which also is of unknown origin.
Where is it exactly?
In all states–both natural and derived– Chalk can be found in the following....
Chalk...
it's use predates its name
wow...
In today's world...

Chalk is made in a Lab.
Known as Calcium Carbonate in both organic and synthetic origin
"unrefined calcium carbonate is a translucent, crystalline white rock".
CaCO3·~0.5H2O Hemihydrate. AKA "the Plaster of Paris
CaCO3·2H2O Dihydrate. AKA "Gypsum"
Chalk is a Phytoplankton Algae known as, Coccoliths.
Discovered by Thomas Huxley in 1860.

"
A great chapter of the history of the world is written in chalk."
-Thomas Huxley

"Chalk, is fossilized evidence of an ancient world, now disappeared."
-Thomas Huxley
Full transcript